SOLUTION: Two people start walking at the same time in the same direction. One person walks at 4 mph and the other person walks at 3 mph. In how many hours will they be 0.75 miles apart?
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Question 1122686: Two people start walking at the same time in the same direction. One person walks at 4 mph and the other person walks at 3 mph. In how many hours will they be 0.75 miles apart?
I followed the D=RT formula and I got .75=4T+3T. Which after combining like terms I got 7T=.75 and the answer is said to be .75 but I got .107, so I'm confused. Unless I'm just really missing something that's so simple I can't see it. Found 3 solutions by solver91311, josmiceli, ikleyn:Answer by solver91311(24713) (Show Source):
In one case, that is when they are walking in opposite directions, your answer is correct: 0.107 hours, or very roughly 6 and a half minutes. On the other hand, if they were walking in the same direction then:
So, 3/4 of an hour or 45 minutes
John
My calculator said it, I believe it, that settles it
You can put this solution on YOUR website! Let = distance covered by faster one = slower one’s distance
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Faster one’s equation:
Slower one’s equation:
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By substitution:
In .75 hrs they are .75 mi apart
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Check: . mi
and mi
OK
